Vulcanizing-mold



E. F. NELSON. VULCANlZlNG MOLD. APPLICAUON FILED FEB.4,1920'.

ELMERF. NELSON, OF CHGAGQ,

' LOUIS,

VULCANZING-MQLD.

Specieation of Letters Patent.

Patentes uw. is., rear.

Application led. February 4, 1920. Serial No. 356,188.

To all whom t may concerm.

Be it known that I, ELMER l". NELSON, a citizen of the United States, residing at 'Chicago, in the county of Cook and State of Illinois, have invented certain new and useful lim rovernents in Vulcanizing-Molds, of which the following is a specification.

My invention relates to molds for vulcanizing rubber and the like, and has for one of its objects the provision of simpleand eiiicient means for introducingl a heating medium into the interior ot lthe rubber to be vulcanized, to facilitate vuicanizing the inner parts of said rubber. t

A further object is the provision oi a device Iparticularly adaptable for vuicaniaing tire fillers of the cushion type, in which the heating medium is brought into contact with both the interior and exterior of the rubber so as to facilitate an even vulcanizetion of such rubber.

Other objects will appear hereinafter, and with all such objects in view, my present in vention resides in the novel features of form, construction, arrangement, and combination of parts' hereinafter described and after ward pointed out in the claims.

In the accompanying drawing l have shown an embodiment of my invention in `derstood that this mold du` Which- Figure l is a side view of a vulcanizing mold embodying my invention, but having a portion broken away to expose underlying parts;

F ig. 2 is an enlarged section taken on line 2-2 of Fig. l;

Figs. 3 and 4 are views similar to Fig. 2, but showing diiierent arrangements oi the partsl for introducing steam or other heatino` medium into the interior of the tire;

i ig. 5 is a fragmental View, partly in section, showing a modified form of tube for introducing thevheating medium 'into the interior of the tire; and

Fig. 6 is a View similar to Fig. 2, but showing a plurality of tubes for introducing: the heating medium into the interior o the mold.

By -way of illustrating my invention 'l have indicated a portable vulcanizing mold suitable for vulcanizing cushion fillers yfior'V vehicle tires and the like It will be .una ing'vulcanization f r Aiso-called v l mold its is located within a heat' canizing kettle, and t` capable of embodiment ous other comparatively thick articles which cannot be vulcanized evenly from the heat poing applied to the outside only ot the rubn Referring more particularly to the drawing, I have indicated a mold made up of a shellor housing comprising two separable parts 7 and 8. The parts 7 and 8, it will be understood, are arran ed to give the rubber to be vulcanized its esired outer` shape, and in the present embodiment, these housing or mold-forming sections 7 and 8 are each annular or ring-shaped in elevation and of: substantially semi-cylindrical sha e lin orosssection, the sections 7 and 8 eing adapted for cooperation and to meet at their side edges to inolose the rubber being vulcanized. lt will also be apparent that this housing or shell may be made upof a .fewer or greater number oi' parts when so desired. ln the form shown I have indioatedears and bolts 9 for detachably or separably holding or locking the parts 7 and 8 together, but it will be understood that many other means may be employed for holding or locking these parts together 'Without departing from my invention.

Disposed within the housing indicate a hollow annular -or ring-shaped member 10, which in the present instance is of tubular form, since it is easiest to conduct the steam or other heating medium through the tire .filler in the elongated member or tube 10. The tube l() is indicated as being' disposed centrally of the parts 7 and 8 in Figs. l, 2, 3, et, and 5, but it will be understood that it is not essential that the tube be positioned.

ing to diiierent requirements. In Fig. 6 I haue shown two/tubes l() spaced apart irrdioating that as manyor as few of these tubes i0 may be supplied as' desired -to obtain the proper vulcanzation of the article vulcanized. l

. Attached to the tube 10 isa men?KY which is hollow and affords communi1 proper comprising or made up of said housing-sections is inthe steamv or other eating medium, such heating medium wil upass through member l1 into the tube l0 and cirn -in the center, but may be varied accordcalate in the lattert'o conduct heat to the interior of Vthe rubber.. canizlng r *h device of this the neat 'cenetratec ubber both from the tub@ i@ Therefore, in vuifrom the center of thev housing 7-8.

and the housing 27m-3, Since the heat can penetrate y and the exterior vulcanica-tion will be more uniform and the time or" vulcanization be reduced over Where the rubber is to be vulcaniaed by heat from the outside only;

l preferably provide. an annular member 12 which is attached to the tube 10 in some manner, either being `formedn integral or se- Uto, as desired. The member 12 through the housing 7--8 and is hold the tube in desired polliee. 1, 2 and 6 have indicated f 1.5 being thin or of' sheet ma- 3 and l l have indicated as bein1 Wedge-shaped so pparent t iat this member 12 in many desirable shapes 'the operation of the device. s. i, f and l have indicated' mem- ,i the for feeding the steam into tubes 10, While in Fig. Il l have indicated the Wedge-'shaped member 12 as being hollow with a communication 12 between the tube 10 and the member 1,2 throughout the entire lengths of said members so that the heating medium is free to circulate in and out of tube 10 throughout the entire lenfrth or' the latter.

fh Figs. 1, 2, 3, 4: and 6 the `tubes 10 are indicated as beingI of rigid construction, such as of metal. ln Fig. 5 l have indicated. the tube 10 as being -ot a lexible material, such asa fabric, telt, or other suitable material,

A'With one end 13 of such flexible tube 10 bent and extending out through the outer side of the rubber being vulcanized and the housing *r1-8. 'Iihe ilenible tube 10 in Fig. 5 may be in one piece and extend entirely around in the housing 7MB, or, it may be made in a plurality of lengths with an end of each length extending out, as suggested by the one end shown in Fig. 5,A and one end of the nent adjacent length disposed against the part as indicated in Fig. 5. lt will also be apparent that both ends of the flexible tube 10 in F 5 may entend out through the rubber and housing 7-8 in the manner suggested by the one extending portion 13. l lind it desirable to place'a rigid band or ring 14: around the outer end of portionl and turn the end portion 15 of such flexible tube back o'ver the ring 14 to keep the ilexible tube from drawing into the rubber while the latter is being vulcanized. A

In Figs; 1 to l, inclusive, l have indicated the member 12 and hollow member 11 asextending radially toward the lcenter of the housing 7-8, and in Fig.'5 I ave indicated the portion 13 as extending radially out In Fig. 6 I have indicated these members 11. and 12 as extending radially, one toward the center and one extending away from the centerv the rubber from both the interior or locked between the parts 7 and 8 rubber neer/,aar

of said housing. F rom this it Will be apparent that the supply tubes 11 and spacing member 12 may extend out through the housing S in any desired direction to suit any particular requirements.

The rubber A indicated in the drawing ivliiclristo be vulcanized may be formed in a tubing machine7 not shown, or in any other desirable manner and preferably formed with an opening corresponding to the outside of tube 10 and provided with a slit corresponding to the outside of member .12. When using a rigid tube 10 the part 12 is necessary to prevent the rubber frombeing vulcanized together and preventing the removal of tube 10. In the form shown in llig. `5 Where a flexible tubeI 10 isused-the tube may be lettin the rubber A When vulcanized, or, it can be removed as in the case ofv the rigid tube. Where the flexible tube 10 is to be left inthe rubber A it is not necessary. to prevent the edges 16 ofthe rubber A from being vulcinizedtogether, therefore, no member corresponding to member 12 Would have `to be used. ln forming the members 11 and 12 these' parts may be formed integrally or secured together in any desirable manner, or, the parts 10, 11 and 12 may beformed integrally, if desirable.

1. A portable rubber vvulcanizing mold forcushion tire-fillers and the like, the same including, in combination, a shell comprising a pair of rigid ring-shaped separable sections substantially semicylindrical in shape in cross-section, said sections being adapted for cooperation to approximately meet at their edges to substantially house the to be vulcanized, the shell being adapted for location during vulcanization within a if'ulcanizing or heating kettle, a tu.- bular lmember disposed within both 'the chamber formed by said sections and the rubber contained therein for vulcanization, said member having communication through said rubber with the exterior of the shell :for coruluctingr heating fluid from the kettle into the interior oi the rubber' being vulcanized within the shell for-facilitating vulcanizetion ot' the interior of the rubber, means within the shell and rubber being vulcanized icrchanneling said rubber to permit ready removal of the tubular member after rubber vulcanization, and means for rigidly locking said sections detachably together in rubber housing cooperation, said heating fluid conducting-member being locked within the shell when said sections are so locked together in rubber housing cooperation.

Lawaai' adapted for'coperation to approximately meet at their edges to substantiallv inclose the rubber to be vulcanized; andthe housing being adapted for location during vulcanizetion Within a vulnanizing or heating kettle, a rigid tubularmember disposed Within the chamber formed'by said sections and having communication With theexterior of the housing for conducting heating fiuid from the kettle into the interior of the rubber being vulcanized within the housing for facilitating,.vulcanization of the interior-of the rub- ',be, means-having engagement with said 'inember'; and extending from said member mitwardly be'tvveentlie meeting edges of the housing sections for channeling the rubber. bei-ng vulcanized to permit removal of the 'hollovv member after rubber vulcanization,

and means for rigidly locking said housing sections detachably together in rubber inclosing co-peration, said heating-duid conducting member and said channeling means being locked vWithin the housing when its said sections are so locked together in rubber inclosing coperation.

3. A portable vulcanizing mold for cushion-tire lillers and the like, the same including in combination, a housing comprising a pair of rigid ring-sha ed separable sections substantially semi-cy indrical in shape in cross-section, said sections being adapted for coperation to approximately meet at their edges to substantially inclose the rubber to be vulcanized, and the housing being adapted for location during vulcanization Within a vulcanizing or heating kettle, a rigid annular tube disposed within the chamber formed by, and spaced from the .Walls of,

said sections for conducting heating fluid from the kettle into the interior of the rubber being vulcanized Within the housing for facilitating Vulcanization of the interior oi' the' rubber, an aperture'd annular spacingmember having communicating engagement with the interior` of the tube and extending from the tube 4outwardly between the meet ing edges of the housing sections, said spacing-member affording passage for heating fluid from the kettle into the tube and forming a channel in the rubber being vulcanized to permit removal of the tube from the rublili bei' after vulcanization, and means for rigidly locking said housing sections detachably together' in rubberinclosing coperat'iou said tube and said channeling means being locked within the housing when its said sections are so locked together in rubber inclosing coperation.

4. A portable vulcanizing mold for cushion-tire fillers and the like, the same ilncluding, in combination, a housing comprising a pair of rigid ring-shaped separable sections substantially lse'mi-cylindrical 'in shape in cross-section, said sections being' adapted for cooperation to approximately ing communicating engagement with theV tube and extending from the tube outwardly between the meeting edges of the housing sections,said spacing-member affording passage for heating fluid from the kettle into the tube and forming a channel in the rubber` being vulcanized to permit removal of4 the tube after vulcanization, and means for rieidly locking said housing sections detachy ably together in rubber inclosinN coperation, said tube and said channeling means being locked within the housing when its said sections are so locked together in rubber inclosing coperation. p

5. A portable vulcanizing mold for cushion tire-fillers and the like, the same. including, in combination, a housing comprising a pair of rigid ring-shaped separable Isections substantially semi-cylindrical in shape l in cross-section', said sections being adapted for cooperation to approximately meet at their edges to substantially incluse the rubber to be vulcanized, and the housing being 'adapted for locationl during vulcanization Within a vulcanizing or heating kettle, a rigid annular tube disposed Within the chamber formed by, and spacedfrom the Walls of said sections for conducting heating lui into the interior of7 the rubber being vulcanized Within the housing for facilitatin vulcanization of the interior of the rub er, a rigid annular spacing ring lWedge-shaped in transverse section fixed at an edge to the tube and extending from the tube outwardly between the meetingedges ofthe housingsections, said spacing ring having apertttres leading from th exterior' of the housing into the interior of the tube and affording pas! sage for heating Huid from the kettle into the tube and forming a channel in the rubber being vulcanized to permit removal of the tube-after vulcanizaticn, and bolts engaging the housing-sections for rigidly fastening the same detachably together 1n rubber inclosing coperaton, said tube and saidchanneling ring being locked within the housing when its said sections are so locked together in 'rubber inclosing coperation.

In testimony whereof ll have signed, my name to this January, A. 1920.

ELMER F. NELSON.

slpecification on this 29th day of 

